TW408287B - Power on masking detection method for motion detector - Google Patents

Abstract

A method for determining whether the motion detector is in masking state or not as the detector is powered on. In powering on the motion detector, the masking detection state is processed with the motion and warning detection path processed simultaneously. Any infrared motion detected after the detector is warmed up and stabilized will end the masking detection state. Without infrared motion detected, masking condition is declared if some specific amount of microwave Doppler sensing motion is detected in visual extent.

Description

408287 V. Description of the invention (1) The present invention is usually an attempt to detect a by-pass (by pa ss) state detector, and particularly to start the power source in a motion detector (m 〇 ti ο ndetect 〇) Detection method used to determine whether the motion detector is masked. Motion detectors have been widely used in alarm systems. At present, motion detectors usually use dual sensing technology (dua 1 sensing technology), such as microwave Doppler sensor and passive The combination of infrared (PIR) sensors is completed with corresponding processing software. In most cases, the 'P IR sensor is the primary sensor, and the microwave sensor is the secondary sensor used to confirm the PIR sensor's detection event. Although this technology can reliably detect warning conditions under a variety of sensing conditions, the masking of the p 丨 R sensor may disable the dual-sensing motion detector. The so-called "masking phenomenon" usually involves placing a static object in front of the sensor and covering the sensor with tape, paint, or other materials. In addition, placing a glass plate or spraying clean varnish or hair spray on the PIR sensor may also cause masking. Usually, the 'masking' phenomenon occurs on the PIR sensor, because the infrared signal is light, and the microwave signal is the penetration or rebound of the object. It can be known from the death report that the mask detection is very heavy in dynamic detectors that need to maintain high security at all times, and various mask detection methods have been proposed. The simplest method is to monitor the activity of the PIR. Sensor t and lose the piR sensor: after a time it is declared in a masked condition. However, this method is inversely masked. For example, if there is no space (emPty r〇〇m), it may be called masked L. The other way is to use the real mask action (palpitations)

408287

V. Description of the invention ¢ 2) Act of maSking) Detecting mask conditions. In the dual motion detector + using a microwave reactor, high microwave signals are generated when a human body or a moving object approaches the sensor. ®This’microwave Doppler sensor makes it easy to detect an object when it moves near the sensor and blocks the sensor. Fortunately, the #Bodublele sensor cannot detect a puppet object. The method is to use a near-infrared emitter / detector pair to obtain a reflected beam. High reflection signals indicate masking conditions because the object is very close to the sensor. However, this method is expensive and consumes power. Therefore, without adding extra cost and power, the most reliable mask detection method is to use a microwave Doppler sensor to detect a close event (close two p event), that is, move to a microwave Doppler An event within approximately eighteen inches of the sensor. After detecting the approach event, activate the p i R detection window. If the p IR sensor is active in the detection window, the mask detection path is ended. Conversely, if the PIR sensor has no activity in the detection window, it is declared as a mask condition. However, microwave-based mask detection can still be erroneous, as this technique is still related to seeing real mask activity. Therefore, this technology cannot perform mask detection when the detector loses power, for example: the detector loses power when the sensor is masked, the power is interrupted at any time, or the sensor is blocked when the power is short cover. In any case, even if the masking phenomenon has been formed, the sensor will not declare it in a masking condition after the power is restarted. Therefore, how to provide a mask detection system and method ’, so that the sensor will not announce an incorrect mask state after power interruption, becomes a

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The present invention is used to meet this need and overcome the need to overcome the conventional arts. The motion detector can detect whether it can detect the detection. Then, the invention is restarted. The invention determines when the detector is powered on. Detection method of the mask condition. In particular, the transmitter is covered by a power source after the power supply is interrupted (for example, the power to the panel is turned off). For example, according to the present invention, any infrared movement detected when entering the detection state of the mask when the power is applied will eventually reach the situation of infrared activity. If Dong's microwave sensor is active, the declaration method is based on a large number of microwave activities At least it is assumed that the amount of microwave activity that the sonar infrared sensor does not have can be based on detection, to avoid false masks due to the sound of the recorder transmitter (cellular ^ telephone, etc.). Mask detection methods, The detector will detect this mask detection state after the detector is stable after warming up. The predetermined number is detected as a mask condition in the non-detection visual range. This mask detection should be accompanied by a small amount If the infrared activity is masked, the characteristics of the detector can be changed by triggering the mask, but it must be made by microwave activity of other interference sources such as mobile power. One object of the present invention is to detect Attempt to Detect Motion Detectors Another object of the present invention is to provide a reliable mask detection, compared to the conventional art of using a near-infrared emitter / detector pair, No additional component cost and power consumption. Another object of the present invention is to determine whether the infrared sensor in the motion detector is masked.

Page 6 408287 V. Description of the invention (4)

The purpose of the mask condition of the S device of the present invention is to detect the date and month of the current issue after the power is turned on. @G The mask of the Yifu tester ^ The purpose is to occur during the period of the debt issue when the power shortage occurs. ίή Η Can avoid the motion detector, the purpose is to cause the mask detection of σ for a predetermined time after the motion detector is powered on. At the date of this issue, the detection is based on the use of a microwave Doppler sensor as a trigger to set the mask of the infrared sensor in the heart price weapon. The horoscope rhyme " clear order, & only, the following special = Wei it's purpose, characteristics, and advantages can be more obvious and easy as follows: a good example, and in conjunction with the attached drawings, make a detailed description . : Is a functional block diagram of the dual-channel motion detector. The flow chart of the method is the power startup mask detection method of the dynamic detector in FIG. 1. The symbolic diagram is a functional block diagram of the power startup detection circuit 32. .a ^ 1〇 ^ dual-sensor dynamic detector; 12 ~ infrared channel; 14 ~ microwave electric heating sensor; 18 ~ amplifier system; 20 ~ microwave emitter / backup I *, μgu microwave driver / management circuit 24 ~ microwave signal amplifier system & two, converter; 28, microcontroller; 30 ~ warning relay. Embodiment 1 FIG. 1 is a functional block diagram of a dual-sensor motion detector. The detector 10 has an infrared channel 12 and a microwave channel 14, both of which output analog signals

408287 V. Invention Description (5). The infrared channel usually has a pyroelectric sensor 16 and an amplifier system 18, while the microwave channel usually has a microwave emitter / detector and a driver / supervisor circuit as a Doppler sensor 20. 22. Amplifier system 24. The analog signals of the two channels are converted by the analog / digital converter 26 to a digital form. The microcontroller 28 郢 processes these signals and detects if there is a warning condition, and provides an output to an alarm relay 30. The microcontroller 28 typically has one or more memories, such as read-only memory or random access memory, for storing processing software and data, and may include an analog / digital converter 26. Those skilled in the art can also add other devices and subsystems, or connect these devices and subsystems in a different way than in Figure 1. As described below, the present invention can be implemented in software or / and carcasses associated with the above-mentioned detector or any other detector having both infrared and microwave channels. The tester 10 is only an example of a conventional predicate tester and should not be used to limit the present invention. To put it simply, the mask detection method of the present invention is based on a large number of microwave activities U = the fake m external line sensor with a small amount of infrared activity: because & 'if no infrared activity is detected, it is said to be measured = microwave Activities can be considered as masking conditions. In addition, because there wo n’t be enough microwave activity, it ’s broken! The declaration of entry is a mask condition, but as long as someone who knows enters this space, the instrument will still announce after seeing the microwave activity.

4U060 f Fifth, the description of the invention (6) is the mask condition. In contrast, when the occupant is sensing an object, its activity will also cause the mask phenomenon to be measured = return to the building after the mask. Provide a reliable indication of whether the building is in good condition = this, the present invention can declare the mask conditions. And the mask that will not cause errors. Figure 2 is the implementation steps of the mask detection conditions of the present invention. It can be implemented by the program in the microcontroller 28, but it can also be implemented by the program in the separate microcontroller. In addition, it is best to run this program at the same time as normal activities and detection paths. In step 100, in the step 100, the present invention detects that the reset signal is received by the microcontroller 28. The conventional power-on detection circuit (as shown in Figure 3) = Provide-Power-on reset signal 'to reset most micro-controllers. In the circuit of Figure 3, Vs is the input power line of the motion detector. After transient suppression and reverse polarity protection diodes (not shown). Vdd is the rectified power supply voltage used as a microcontroller and to charge capacitor C1. At the beginning, if the capacitor ci is turned on 'discharge', the reset line will go low and reset the microcontroller. When the electric charge is higher than the critical value of the zener diode CR1, 3.9V, the reset output becomes high and allows the microcontroller to begin operation. gVdd drops during operation. The diode CR2 will allow the capacitor C1 to discharge quickly, so that insufficient power can be detected quickly. Then, in step 102, the system waits for about sixty seconds to allow the amplifier in the price detector to reach a steady state. In addition, the power-on detection flag is ramped again during the initial period s. This flag is used to indicate the detection and measurement of the power-on mask.

V. Description of the invention (7) State 'enables the power-on mask detection path to be executed at any time when the warning processing code passes. The new clock. In other words, the power-on mask detection path is performed in parallel with the warning processing code. After the start step ’, in step 04, test if the infrared sensor can detect any infrared activity. If there is, the power-on detection flag is reset in step 106, and the system returns to normal operation in step 108. Because infrared activity has been detected, there is no need to continue to determine if there is a power supply to activate the mask condition. By clearing the power-on detection flag and power-on mask, the test path will not be executed when the warning processing code passes the new clock. _If infrared activity cannot be detected in step 104, 'In step 11G, test the microwave Doppler sensor to determine whether there is a predetermined number of microwave activities using the structure of Figure 1. The critical value is about three seconds Moving window components, although the critical amount of microwave activity in this window can vary from individual to individual. However, 'this threshold value should be large enough to avoid the microwave activity caused by recording of ancestors, subscription telephones, and other interference sources = In other words, the selected threshold value should be able to measure the space to be protected. Real activity. If a predetermined number of slightly turbid live stories are detected, the + stop_ infrared warp station * will also be activated in step 112 to enable faster mask detection, but a longer time window & $ 时 姬Right p V Tu Ye Shi J Ye You better detection of false masks ^ ^ better immunity. If step 114 is activated in this window, the mask detection status will be cleared in step 6 and the '' 'flag will be cleared in step 106, and the system will start the test if the power is turned on. In contrast, if step " 4 returns to normal operation at step 108 at this time ® No infrared activity is detected on page 10 408287 V. Description of Invention (8) ~ ", then step 1 1 8 will test the termination time . If the window is at this time; the infrared sensor continues to test; if at this time the window is still not active, step 120 will be declared as a mask condition. In addition, the programming language of the operable software or programming platform used to implement the present invention is written as' as known programming technology. Details of the factors or code will not be repeated. From the above, it can be known that the reliable mask source detection event provided by the present invention starts. Although the present invention has been described in a preferred embodiment, it is not intended to limit the scope of the present invention. Any familiarity with this technique is within the spirit and scope of the present invention. Define

If k exceeds 贝, the infrared code can be detected by various methods. The soft method of operation is to expose the above by electricity.

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Claims (1)

_408287____ 6. Scope of patent application 1. A power-on mask detection method for a motion detector, the motion detector has an infrared sensor and a microwave Doppler sensor, the steps include: (a) in When it detects that power is applied to the motion detector, it starts the mask detection process; (b) terminates the mask detection process when it detects a sensed infrared signal; (c) if it detects The microwave signal exceeds a critical value before detecting an infrared signal, starting a mask detection time window; and (d) if it is not detected during the mask detection time window—the infrared signal 'declares a Matting conditions. 2. The power-on mask {Chain Test Method 'as described in item 1 of the scope of patent application, further includes a step of terminating the mask detection procedure after declaring a mask condition. 3. The power-on mask detection method as described in item 丨 of the patent application range, wherein the mask detection time window has a period of about fifteen seconds. 4. The power-on mask detection method according to item 1 of the scope of the patent application, wherein the threshold has about eight sensing events in a period of about three seconds. · 5 · —A power-on mask detection method for a motion detector, the motion detector having an infrared sensor and a microwave Doppler sensor, the steps include: (a) upon detection When power is applied to the motion detector, a mask detection process is started; D Page 12_ 408287 VI. Scope of patent application (b) Monitoring the signal of the infrared sensor; (c) If the infrared signal is detected by the sensor, terminate the mask measurement procedure; (d) Monitor the microwave sensor The sensor signal; (e) if the detected microwave signal exceeds a critical value before detecting an infrared signal, start a mask detection time window; and (f) if it detects in the mask No infrared signal was detected during the time window, a mask condition was declared. 6. The power-on mask detection method according to item 5 of the scope of patent application ', further comprising a step of terminating the mask detection procedure after an announcement of a mask condition. 7. The power-on mask detection method according to item 5 of the scope of the patent application, wherein the mask detection window has a period of about fifteen seconds. 8. The power-on mask detection method according to item 5 of the scope of the patent application, wherein the threshold has about eight sensing events in a period of about three seconds. '& 9. A power-on method for detecting a motion detector mask, the motion detector has an infrared sensor and a microwave Doppler sensor, the steps include: (a) detecting the A power-on reset signal generated by the motion detector; (b) 'monitoring the signals of the infrared sensor and the microwave 枉 bler sensor when the power-on reset signal is detected; ,, (c) if Before detecting an infrared signal, a microwave sensor that is active at a threshold is detected, and a mask detection time window is started; (d) If a mask detection time window is not detected during the mask detection time window, Infrared letter Page 13 408287 VI. Patent Application No. 'declares a masking condition; and (e) When an infrared signal is detected, 10, as described in item 9 of the patent application scope. Method where the mask detection time window has a period of about five seconds to start the mask detection method, t, ^ v. 11. As stated in item 9 of the scope of the patent application, the threshold value of ° xuan L is in the period of about two seconds and the right λ is an ancient piece. 4 / 、 There are about eight induction events12, a JA 'g J αΰa _ > electric' raw collapse L motion 'used to detect the motion detector mask έτ' Ξ and -microwave Doppler induction Measuring a power-on reset signal generated by the motion detector; monitoring the signals of the infrared sensor and the edge microwave Doppler sensor when the power-on reset signal; (C) when an infrared signal is detected, Maintain normal operation; (d) If a microwave signal exceeding a critical value is detected before detecting an infrared signal, start a mask detection time window: No. Ce) If during the mask detection time window Not Detected—The infrared signal announces a mask condition; (f) A sensed infrared signal is detected within the mask detection window to maintain normal operation. 1 3 · The power-on mask detection method according to item 丨 2 of the patent application scope, wherein the mask detection time window has a period of about fifteen seconds. 1 4 · The power-on mask detection method according to item 丨 2 of the patent application scope, wherein the threshold value has about eight sensing events in a period of about three seconds ^ 4i -r jL. No. 14 Yin 408287 Six Scope of patent application. 15. —A motion detector for detecting a clam motion detector. The motion detector has— an infrared sensor and a start-up method. The steps include: microwave Doppler induction (a) detecting the motion The detector generates — (b) the reset signal is detected when the power-on reset operation is detected; the sensor and the letter of the microwave Doppler sensor; ^ 'monitor the infrared (c) in the detection When an infrared signal is reached, if dimension (d) is detected—infrared signal ^ 彳, the movement of the device within the window of 'about three seconds' means two = Du 丄, ,,,,, and · 0 fifteen seconds. Mask detection time window; not detected during ^ -infrared signal time ^^ ^ 1 6.—A kind of dynamic detector for mask detection, including: (a) —infrared sensor; (b) -A microwave Doppler sensor; (c) a microcontroller operatively coupled to the red-wave Doppler sensor; and a wire-line sensing Is and the microstep (related to the programmable data processor) Program to perform undercover detection) In-process detection of power applied to the dynamics Page 15 408287 6. Testing of patent application scope When the detected-infrared infrared signal is read, the mask is terminated to read a higher value. If the detection signal exceeds the threshold value before an infrared signal is detected, a mask detection window is started; No infrared light was detected during the mask detection window, and a mask condition was reported. < 17. The motion detector as described in item 6 of the scope of patent application, the above-mentioned program further implements a step of terminating the sequence after a mask condition is reported. < Guide measurement range 1 8. The motion detector according to item 16 of the patent application scope, wherein the mask detection time window has a period of about fifteen seconds. 19. The motion detector according to item 7 of the patent application scope, wherein the threshold has about eight sensing events in a period of about three seconds. 20.-A motion detector for mask detection, including: (a)-an infrared sensor; (b)-a microwave Doppler sensor; (c) a microcontroller operatively coupled to the infrared sensor And the microwave Doppler sensor; and (d) a program associated with the programmable data processor to perform the following steps: (i) when power is detected applied to the motion detector, start— Mask detection procedure; (ii) monitoring the signal of the infrared sensor; (iii) terminating the mask detection process if an infrared signal is detected Page 16 Sequence; 11 v monitor the signal of the microwave Doppler sensor; V) if the detected microwave signal exceeds a critical value before detecting an infrared signal, start-mask the debt time window; and (V 1) If no / infrared signal is detected during the mask detection time window, a mask condition is declared. 2 1 · The motion detector as described in item 20 of the scope of patent application, wherein the program further implements a step of terminating the mask detection edge sequence after the mask condition is announced. 2 2. The motion detector according to item 20 of the patent application range, wherein the mask detection window has a period of about fifteen seconds. 2 3. The motion detector according to item 20 of the patent application range, wherein the threshold has about eight sensing events in a period of about three seconds. 2 4—A kind of motion detector for mask detection, including: (a) —Infrared sensor; (b) —Microwave Doppler sensor;. (C) A microcontroller, which operates lightly in the infrared Sensor and the microwave Doppler sensor; and (d) a program 'in connection with the programmable data processor' for performing the following steps: (i) detecting the power-on reset initiated by the motion detector Signals; (ii) 'monitor the signals of the infrared sensor and the microwave Doppler sensor' when the power-on reset signal is detected; (iii) if an infrared signal is detected before detecting an Critical value No. 17 408287 VI. The microwave sensor that is active in the scope of the patent application starts to detect the time window; (iv) if an infrared signal is not detected during the time period of the mask debt test window Mask conditions; and (v) when an infrared signal is detected ... 2 5. The motion detector described in item 24 of the patent application scope. The mask detection window has a window of about ten. A period of five seconds. 2 6. The motion detector obtained according to item 24 of the patent application range. The threshold has about eight sensing events in a period of about three seconds. 2 7. —A dynamic detector for mask detection, including: Ca) —Infrared sensor; (b) a microwave Doppler sensor; (c) a microcontroller 'operatively coupled to the infrared sensor And the microwave Doppler sensor; and a program connected to the programmable data processor for performing C 1) detecting the dynamic detector to generate a thunder (⑴ the power-on reset was detected in Russia Set ^ number original: dynamic reset signal; the signal of the sensor and the microwave Doppler sensor: at the time, the infrared (1 1 1) is monitored and an infrared signal (iv) is detected. The infrared signal is used to capture the normal operation; the microwave signal starts to mask a measurement ^ 2, it is said that it is left to exceed a critical value (v). If the mask detects the time window '®, a mask is declared Conditions; and 4 no infrared signal (Vi) is detected within the window during the detection of the mask to maintain normal operation. The infrared signal induced therein Apply for special time 'maintain normal action β on 2 8. The motion detector described in item 27 of the patent application scope, in which the library two-type method implements a termination of the mask detection after directly reporting a mask condition The steps left to call. 29. The motion detector described in item 27 of the scope of patent application, wherein the mask detection time window has a period of about fifteen seconds. 30. The motion detector described in item 27 of the patent application scope, wherein the 5X threshold has about eight sensing events in a period of about three seconds. 31. A motion detector for mask detection 'includes: (a)-an infrared sensor; (b)-a microwave Doppler sensor; (c) a microcontroller operatively coupled to the infrared sensor and The microwave Doppler sensor; and (d) a program connected to the programmable data processor 'for the following steps: (1) detecting a power-on reset signal generated by the motion detector; (ji) When the power-on reset signal is detected, the signals of the infrared sensor and the microwave Doppler sensor are monitored; normal operation is maintained when an infrared signal is detected; In front of the infrared signal, the microwave Doppler senses about one and the right side of the moving window, and about eight events are detected in the moving window, starting with the powerful detection window during the eighth / fifth period: ( V) If the mask is tested in this mask, a mask condition is announced; Shi Guang, not detected, detected-infrared signal 408287 Page 20